int?m;
int?n;
if(m==n){
i=0;}
if(m>n){
i=1;}
if(m<n){
i=2;}
switch(i);
case?0:
System.out.println("m等于n)；
break;
case?1:
System.out.println("m大于n")；
case?2:
System.out.printn("m小于n")；

?

switch?(表達式)?{

case?條件1:

????語句1;

????break;

case?條件2:

????語句2;

????break;

...

default:

????語句;

}

示例

int?i?=?3;

int? j =5;

int k = i - j;

//然后對于k進行判斷三種情況，<0,>0,=0

switch?(k)?{

case?1:

????System.out.println(1);

????break;

case?2:

????System.out.println(2);

????break;

case?3:

????System.out.println(3);

????break;

default:

????System.out.println(0);

}

swith(m-n)

case 0: ?System.out.println("等于");break;

default:{ if(m>n){System.out.println("大于");break；}else {System.out.println("小于")；break；}

}

swith(m-n)

case 0: ?System.out.println("等于");break;

default:{ if(m>n){System.out.println("大于");break；}else {System.out.println("小于")}

}